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13086020 = 225654301
BaseRepresentation
bin110001111010…
…110101000100
3220121211122102
4301322311010
511322223040
61144251232
7216141443
oct61726504
926554572
1013086020
1174287a2
124470b18
13293240c
141a48d5a
151237515
hexc7ad44

13086020 has 12 divisors (see below), whose sum is σ = 27480684. Its totient is φ = 5234400.

The previous prime is 13086019. The next prime is 13086037. The reversal of 13086020 is 2068031.

13086020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6895876 + 6190144 = 2626^2 + 2488^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 654301 = 13086020 / (1 + 3 + 0 + 8 + 6 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 13085983 and 13086001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327131 + ... + 327170.

It is an arithmetic number, because the mean of its divisors is an integer number (2290057).

Almost surely, 213086020 is an apocalyptic number.

13086020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13086020 is an abundant number, since it is smaller than the sum of its proper divisors (14394664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13086020 is a wasteful number, since it uses less digits than its factorization.

13086020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654310 (or 654308 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 13086020 is about 3617.4604351672. The cubic root of 13086020 is about 235.6509490943.

The spelling of 13086020 in words is "thirteen million, eighty-six thousand, twenty".

Divisors: 1 2 4 5 10 20 654301 1308602 2617204 3271505 6543010 13086020